Portable illumination device

• Main Authors: SIMPELAAR BENNIE, BLEES MARTIN H, BARROIS FERRY, FISEKOVIC NEBOJSA, HAENEN LUDO, SOROKIN MIKHAIL
• Format: Patent
• Language: Chinese; English
• Published: 18.03.2009
• Subjects: BLASTING; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; LIGHTING; LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE ORSPECIALLY ADAPTED FOR TRANSPORTATION; MECHANICAL ENGINEERING; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; WEAPONS

The present invention relates to a portable illumination device (100) for illuminating an object (200) through a medium having an absorption coefficient, the illumination device (100) comprising a lighting unit (101) including at least two differently colored light sources (Li - L3) for emitting light having a color distribution, and a control unit (105) for adjusting the color distribution. The control unit (105) is adapted to receive a distance estimate corresponding to the distance between the illumination device (100) and the object (200), and adjust the color distribution depending on the distance estimate, such that light reflected from the object is perceived to have substantially correct color reproduction. An advantage with the invention is that an object (200) illuminated through a medium will be perceived by a user using the portable illumination device (100) as having a substantially correct color reproduction.